William F. Perrin-Bernd Wursig-J.G.M. Thewissen <br/><br/>
Encyclopedia of Marine Mammals 

 - 2nd ed 
 -  Academic Press  2009 
<br/><br/><label>ISBN: </label>9780123735539 
<br/><br/><label>Subjects--Topical Terms: </label><br/> General<br/> Life Sciences <br/> Zoology <br/>Marine mammals--Encyclopedias.<br/>SCIENCE